Messages in this thread Patch in this message | | | From | Bobby Powers <> | Subject | [PATCH v2] tools/lib/api: undefine _FORTIFY_SOURCE before setting it | Date | Tue, 21 Apr 2015 19:19:41 -0400 |
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Some toolchains (like Hardened Gentoo) define _FORTIFY_SOURCE in the built-in, default args. This causes perf builds to fail with:
<command-line>:0:0: error: "_FORTIFY_SOURCE" redefined [-Werror] <built-in>: note: this is the location of the previous definition cc1: all warnings being treated as errors
To avoid this, undefine _FORTIFY_SOURCE before (possibly re-)defining it in tools/lib/api.
v2 applies cleanly on top of already pulled kbuild changes for 4.1-rc1.
Signed-off-by: Bobby Powers <bobbypowers@gmail.com> Acked-by: Jiri Olsa <jolsa@kernel.org> --- tools/lib/api/Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/lib/api/Makefile b/tools/lib/api/Makefile index d8fe29f..8bd9606 100644 --- a/tools/lib/api/Makefile +++ b/tools/lib/api/Makefile @@ -16,7 +16,7 @@ MAKEFLAGS += --no-print-directory LIBFILE = $(OUTPUT)libapi.a CFLAGS := $(EXTRA_WARNINGS) $(EXTRA_CFLAGS) -CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -D_FORTIFY_SOURCE=2 -fPIC +CFLAGS += -ggdb3 -Wall -Wextra -std=gnu99 -Werror -O6 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fPIC CFLAGS += -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 RM = rm -f -- 2.3.5
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